Paper-feeding machine



Patented Apr. 25,` |899. T. 0. DEXTER. PAPER FEEDING MACHINE.

(Application-tiled Dec. 14, 1897.)

(Nn Model.)

INVENTOR WITNESSES:

No. 623,770. Patented Apr. 25, |899.

. l T. G.YDEXTER.

PAPER FEEDING MACHINE.

(Application led Dec. 14, 1897.)

(No Model.) I7 Sheeis-Sheet 2.

`ATTORNEY Tn: snags persas co., vmnmumo., wAsmNGYoN4 o. c.

Patented Apr. 25, |899.

T. c. DEXTER. l PAPER FEEDl-NG MACHINE.

(Application led Dec. 14, 1897.)

I7 Sheets-Sheet 3.

(No Model.)

No. 623,770. y Patented Apr. 25, |899.

T. C. DEXTER.

PAPER FEEDING MACHINE.

(Application med nec. 14, 1897.)

(No Model.) I7- Sheds-Sheet 4.

WIT

INVENTOR ATTORNEY THE Nonms PETERS co., Fuoaumo., WASHINGTON. n. c.

No. 623,770. Patented Apr. 25, |899. v

T. C. DEXTER.l

PAPER FEEDING MACHINE.

(Application led mea 14, 1897.)

(No Model.) I7 Sheets-Sheet 5.

wxTNEssEs: 5 f- INVENTOR @WWW WY/6MM.;

w TTORE)B ma Nonms mais co. mow-una, wAsHmoToN. u.

No. 623,770. Patented Apr. 25, |899.

T. C. DEXTER.

PAPER FEEDING MACHINE.

(Application led Dec. 14, 1897.)

I7 Sheets-Sheet 6.

(No Model.)

' ATTORNEY ab 1:? 0 5. u C En H w No. 623,770. Patented Apr. 25, |899.

T. C. DEXTER. PAPER FEEDING MACHINE.

(Application filed Dec. 14, 18'97.)

I7 Sheets-Sheet 7.

(un Model.)

ATTORNEY TN: Nonms percus co Mcm-uwe.. WASHINGTON u c No. 623,770. Patanted Apr. 25, |899. T. Ct DEXTER.

PAPER FEEDING MACHINE (Application lod Dec. 14, 1897.) (No Nudel.) I7 Sheds-Sheet 8.

M Il

WITNESSES: INVENTOR W0. MLM:

l 7/ E 'ATTORNYQX TH: Nonms Ferias cc.. morau'rao., wmrwafon. b. c,

No. 623,770. Patented Apr'. 25, |899. T. C. DEXTER.

PAPER FEEDING MACHINE.

(Application Bled Dec. 14, 1897.)

'I7 shuts-sheet 9.

(No Model.)

WITN ESSES n.szsam. Patented Apr. 25, |899. T. c. DEXTER.

.PAPER FEEDING MACHINE.

(Application med me. 14, 1897.)

I7 Sheets-Sheet I0.

(No Model.)

WITN ESSES TT'OHNEY No. 623,770. Patented Apr. 25, |899. T. C. DEXTER.

PAPER FEEDING MACHINE. (Application tiled Dec. 14, 1897.)

(N o'Model.) I7 Sheets-Sheet Il.

@../mg. E m@ 7H: Norms PETERS co. Fuero-Elmo.. WASHINGTON. n. c.

Patented Apr.. 25, |899.l T. c. DEXTER.

PAPER FEEDING MACHINE.

(Appumian mad me. 14, 1am.) (Ilo Model.)

I7v Shania-Shui l2.

Nik

IlllllllI wnNEssEsgJ y (y mvemon A l l /l/W. Qm/.W il; wl BY no. 623,770. Patented Apr. 25, |899.

T. c. DEXTER. 4 PAPER FEEDING MACHINE.

(Application ld Dec. 14, 1897.)

(N0 Model.)

(No Model.)

Patented Apr. 25, 1899.- T. C. DEXTER.

PAPER FEEDING MACHINE.

(Application Bled D ac. 14, 1897;)

I7 Sheets-Sheet i4.

for

iNvENToR A 5364146). X40/? 1 ATTORNEY N, D. cv Tn: Noam: PETERS co. Pneoumo., wAsHmnTo No. 623,770. Patented Apr. 25, |899. T. C. DEXTER.

PAPER Fiamma MAcHlNE.

(ApplicM-:ion led Dec. 14, 1897.)

(No Modal.) I7 Sheets-Sheet l5.

WITNESSES: 3,6-- mvENToR m: Ncnms 51ans co. PHL-nauwe., wAsmNsToN, n. c

No. 623,770. Patented Apr. 25, |899.

T. c. DEXTER.

PAPER FEEDlNG MACIHNE.'

. (Application led Dec. 14, 1897.) {Nn Model.) I7 Sheets'-Shset I6.

wn'NEssEs: INVENToR l By @W1 QW 7/ w wd. "f

ATTORNEY No. 623,770. Patented Apr. 25, |899. T. C. DEXTER.

PAPER FEEDING MACHINE.

(Appleativm filed Dec. 14, 1897.) v (No Model.) I7 Sheets-Sheet I7.

Fifa. 7.

ATTORNEY ATENT Fries.

TALBOT O. DEXTER, OF PEARL RIVER, NEXV YORK;

PAPER-FEEDING MACHINE.

SPECIFCATION forming part of Letters Patent No. 623,770, Clat'ed April 25, 1899'. Application filed December 14, 1897. Serial No. 661,818. (No model.)

To all whom, it' may concern.-

Be it known that I, TALBor O. DEXTER, a citizen of the United States, residing at Pearl River, county of Rockland, and State of New York, have invented certain new and useful Improvements in Paper-Feeding Machines, of which the following is a full, clear,.and exact description.

vMy present invention relates to improvements in the type of paper-feeding machine illustrated in my application tiled December 2S, 1896, Serial No. 617,263, in which the successive sheets of paper in an adjustably-supported pile are buckled and separated from the pile and then fed off from the pile to a printing-press, paper folding or ruling machine, or other machine designed to operate upon the paper.

The object of my present invention is to simplify the structure and improve the operation ot the essential parts of this type of feeder.

My invention relates,first, to improvements in sheet-buckling devices. The chief novelty in my present form of sheet-buckling devices consists in the construction and arrangement of the working parts of the buck-ler meehanism to adapt them to be operated by a novel reciprocating sliding cam movement, the reciprocating sliding` cam being suitably connected with an oscillating shaft driven from the operating mechanism of the machine. rllhe holding-down finger of the buckler is pivotally mounted upon a suitable stationary support and engaged by a spring-actuated device which com prises a vertically-movable rod connected with an arm which engages the holding-down nger and having a surrounding spiral spring for forcing said arm into engagement with'said holding-down fingerfr and carrying at its upper end a pivoted dog which is operated upon by the sliding cam. When the cam moves in one direction, the spring-pressed arm is elevated away from the holding-down finger by reason of the engagement of the cam with the dog, and when the cam movesin the opposite direction said dog is automatically released to allow the springpressure torhe again applied to the holdingdown finger. The buckler-nger proper consists of a reciprocating vertically moving spring-pressed finger connected with the reciprocating bar by which the sliding cam is operated. 1 arrange a buckling mechanism at each side of the pile adjacent to the rear end and l couple the two reciprocating operating-bars at the center of the machine by means of two coupled levers, one of which is oscillated from a shaft extending from the power-shaft of the machine. By this system of coupling-levers the two sets of buckling devices are sim ultaneou sly operated for buckling both rear corners of a sheet at the same tim e. The sheet-buckling mechanism covered by my present application differs from the buckling mechanism heretofore employed in this type of paper-feeding machine in that the operation of the buckler-iinger and the control of the spring-pressure upon the holdingdown finger has been previously accomplished by means of rotary shafts and cams operating through links and levers. form of buckling mechanism is simpler in construction and superior in operation to the old forms of devices.

My invention relates, secondly, to a springpressed rod or arm resting constantly upon the topof the pile adjacent to the buckling mechanism. The rod or arm is preferably provided with a rubber tip, which engages the top sheet of the pile. When thebuckling-finger operates, the sheet is buckled against said rod or arm and is then passed from theipile by thev operation of the feeding-off devices, the rubber-tipped rod or arm serving to'retard or hold back any chance underlying sheets which may have been buckled with the top sheet and which would otherwise pass forward with the top sheet under the action of the feeding-off devices. Incidental to this part of my invention to further assist in the holding back of any chance underlying sheets I provide a rubber-faced holding block or shoe,- which is intermittently brought into engagement with thetop of the pile of sheets just after the feeding-off devices have operated, so as to rmly engage the sheet directly beneath the shifted top sheet the moment. the sheet-delivering mechanism engages said top sheet for passing it from the machine.

My invention relates, thirdly, toan improved and simplified form of automatic tahle-elevatin g mechanism. This table-elevating mechanism is similar to hutsimpler than The present of the pile of paper.

the form of said mechanism covered by my application above referred to. In the present form of this mechanism I do away with the oscillating hood or shield and control directly the oscillation of the feeding-pawl, which operates upon the ratchet-wheel of the transversely-extending elevating-shaft. rlhe pawl is journaled upon an oscillating arm, which is connected through the medium of a rod and bell-crank lever with the verticallysliding controlling gage-rod, said gage-rod being normally held in elevated position by the engagement of the dog formed upon another bell-crank lever pivoted tothe machine-f rame and carrying at its lower end a freely-journaled rollerresting constantlyV upon the top The rod which connects the oscillating pawl-supportingarm and bellcrank lever is provided with an adjustable tappet, which is engaged by a sliding tappet carried by the power rock-arm. \Vhen the pile of paper is at its normal height, the pressure of the pile upon the roller will hold the dogof the second-named bell-crank lever into engagement with the notch in the gage-rod, holding said gage-rod in elevated position and the connected first-named bell-crank lever, connecting-rod, and oscillating pawl-carrying arm in inoperative position. \Vhen the parts are in this position, the adjustable tappet on the connecting-rod cannot be engaged by the tappet of the power rock-arm suflieiently to operate the table-elevating ratchet-wheel, though the tappets do engage sufficiently at each stroke to slightly release the dog from the notch in the gage-rod in case the pile has been reduced sufficiently to allow the dog to fall ont of the notch. If the top of the pile falls below normal, the gage-rod is released and is allowed to fall to its lowest position, carrying the pawl-supporting arm and conneeting-rod into operative position in readiness to be actuated by the tappet on the power rock-arm.

My invention relates, fourthly, to an improved feeding-oft mechanism and an automatic mechanical controlling device therefor actuated bythe sheets fed from the machine. In this part of my machine I employ, as formerly, the reciprocating carriage supporting the relatively-1novable rack-bar for controlling the position of the feed-lingers with relation to the pile of sheets, but I have rearranged the feed-lingers so as to control their position by means ot' a single controlling-arm actuated by the cam-face of the rack-bar, and I have done away with the elect-ric tripping device formerly employed and have substituted a mechanical tripperforcontrolling the position of the rack-barili the carriage. The mechanical trip comprises a tripping-linger supported in the path of the sheets, a dog journaled to a stationary part of the machine above the rack-bar, and a mechanical lostmotion connection between the tripper and dog to cause the latter to fall into engagement with the rack-bar when the former is tripped or elevated by a passing sheet for' causingY the rack-bar to be shifted in the carriage and elevate the feeding-tin gers from the pile. The mechanical connection between the tripper and dog must have some provision for lost motion in order that the dog will not cause the tripper to bind upon the sheet when the carriage is moving rearwardly and the dog playing over the teeth of the rackbar. This mechanical connection with provision for lost motion may be a rod connected with the tripper and passing loosely through a hole in a pin projecting from the dog and having tappets above and below the pin, or said connection may be some other lost-mo# tion connection within the skill of mechanics.

My invention relates, fthly,to an improved form of sheet-ealipering device which is, as far as I am aware, broadly new. Heretofore it has been common to construct sheet-calipering devices of two members capable of relative adjustment toward and away from each other in order to set them to caliper any thickness of sheets to be passed through the machine, one of said members being capable of an additional movement, usuallyin atransverse direction, for actuating some form of throw-out mechanism which will arrest the operation of the machine when an improper thickness of sheets passes the ealipering device. Mypreseutformofcaliperingdevicediffers fundamentally from all previous forms of such devices known to me in that Iprovide two ealipering members whichareeapable ofbeing intermittently moved relatively toward and away from each other for intermittently closing upon a passing sheet and ealipering it. It the thickness of the sheet or sheets which are passing at the moment the ealipering device acts is thicker than the maximum to which the device has been adjusted, said caliperingdevieewillimmediatelydetect this fact and automatically actuate the throw out mechanism. The preferred embodiment of this essentially novel form of ealipering device comprises two members supported normally with a su tieient space between them t'or the free passage of the sheets, suitable connecting devices between one of said members and the thro w-out mechanism of the machine, a spring device for the other of said members tending to close said other member upon the first-named member with a yielding pressure, and a suitable controlling operating mechanism which normally restrans the tendency of the spring-actuated member to close and which intermittently allows said spring-actuated member to operate under the action ot' its spring for ealipering a sheet. My improved sheet-calipering device is preferably arranged as near as possible to the sheet-delivery mechanism of the feeding-1nacl1ine in order that the several devices ot' the lnaehine will have ample opportunity. to act upon the sheets, and I prefer to have the ealipering device actuated by the operating device of the delivery mechanism (usuallyin the form IOO of drop-rollers) or by devices directly connected or geared thereto in order that the delivery mechanism may be stopped before feeding off the sheets which have tripped the caliper.

My invention relates, sixthly, to an improved form of throw-out mechanism actuated by said calipering device for arresting the operation of the machine. The throwout mechanism comprises a suitable clutch gearing the working parts of the machine to the power-shaft, a bolt adapted to release the clutch and arrest 'the operation of the machine, and a shipping-lever controlling the position of said bolt. The shipping-lever is provided with a hand-lever for manually operating it and an automatic device adapted to be actuated by the calipering device above referred to. The automatic device is preferably combined with the sheet-delivery or drop-roller operating mechanism and comprises a pivoted dog journaled upon a bar connected with the shipping-lever, a latch engaging the dog for holding it in inoperative position, an electromagnetic device for tripping the latch under the control of the calipering device, and a shoulder formed upon one of the bars of the drop-roller mechanism and adapted to engage the dog for operating the clutch when the calipering device trips the controlling-latch of the dog. The droproller mechanism is constructed as heretofore with the exception of the shape of the cam which controls the drop of the rollers. In my improved form of mechanism I provide the cam with a double drop, the initial part of the drop being for the purpose of throwing out the clutch of the machine in case the clutchcontrolling device has been tripped by the caliper, while the second part of the drop is to allow the drop-rollers to fall into contact with the lower stationary rollers, with which they cooperate. The initial drop in the cam is not sufiicient to allow the drop-rollers to come into contact with their lower stationary rollers, and if the clutch has been thrown out the machine will immediately be stopped and the drop-rollers will therefore not engage the sheet or sheets which have tripped the controlling device, and said sheets will not be fed from the machine to any great extent.

My invent-ion relates, seventhly, to a novel form of upright front guides for the pile of sheets. The novelty in this part of my invention consists in forming the front guides of a series of vertically-extending air-pipes suitably'connected with an air-blast apparatus and having their upper blast ends approximately on a level with the plane of feed The front guides or air-tubes are arranged between the pile andthe sheetseparators (the pile being arranged against the guides) and serve to raisethe front edges of the successive sheets as they are passed to the separator-beds, thereby preventing the front edges of the sheets being rammed against lthe edges of the separator-beds. In connectomatic throw-out of the machine. a detail plan view of one corner of the mation with these air-blast tubes I provide rods above the plane of feed to confine the sheets against the air-blast and allow them to move vertically only so far as necessary to avoid conflict with the edges of the separator-beds.

My invention relates, further, to other features of novelty in construction and arrangement, which, together with the above-named main features, will now be described with reference to the accompanying drawings and will afterward be particularly described with reference to their patent-able novelty in the annexed claims.

In said drawings,Figure 1 is a diagrammatic representation of the type of feeding-machine to which my present improvements are particularly applicable. Fig. 2 is a plan view of such a machine having myimprovements applied thereto. Fig. 2fL is a detail perspective view showing operative connection between main shaft and buckler-operating shaft. Fig. 3 is a side elevation of the right-hand side of said machine. Fig. 4 is a side elevation of the left-hand side of said machine. Fig. 5 is a detail side elevation of one of the sheetbuckling devices. Fig. 6 is a detail sectional end elevation of the same. Fig. 7 is a detail vertical sectional view illustrating one of the con trolling and operating devices of the holding-down nger. Fig. 7 is a similar detail View showing parts in different position. Fig. 8 is a detail rear end elevation of a feedingmachine, partly in'diagram, representing the system of coupled operating-levers for imparting simultaneous movements to the two sets of buckling devices at the opposite sid es of the pile of sheets. Fig. 9 is a perspective View illustrating said operating-lever mechanism of the bucklers. Fig. IO is a partial central vertical sectional view of the machine, illustrating in side elevation the improved automatically-cont-rolled table-elevating mechanism. Fig. 1l is a perspective View of the automatic controlling parts of the'same. Fig. 12 is a detail longitudinal sectional view illustrating my improved automatically-controlled feedin g-off devices and the coperatin g separating devices. Fig. 13 is a horizontal sectional view of the mechanism shown in Fig. 12. Fig. 14 is a detail side elevation of one of the feedingoff devices. Fig. 15 is a transverse sectional view taken on the line 15 l5 of Fig. 14. Fig. 16 is a detail perspective view illustrating the automatic tripping device actuated by the passing sheets to control theoper'ation of the feeding-off devices. Fig. 17 is a detail longitudinal sectional view illustrating the preferred structure of one of the lower separator-pads. Fig. 1S is a detail vertical sectional elevation illustrating my improved 4sheetcalipering mechanism which controls the au- Fig. 19 is chine, illustrating the automatic throw-out mechanism.

ICO

IIO

Fig. 2O is a detail vertical sectional` elevation of the automatic throw-out mechanism, illustrating the same with the 

